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Complete. Blood vessels
EduBook Organización
- 4208 visitas
Complete these sentences with the correct words: Blood circulates around our body through tubes called . Arteries carry blood containing oxygen from the to the capillaries. The are narrow blood vessels…
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The city as an ecosystem - Cities and Urban Areas
EduBook Organización
- 3242 visitas
An ecosystem is an area where living things interact with each other and their physical environment. A city is considered to be an ecosystem as many interactions are constantly taking place. Resources…
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Water purification and treatment
EduBook Organización
- 3164 visitas
Water goes through a series of stages both before and after it is used for consumption. Water collected from a river or lake is purified for human consumption. After human use, contaminated water and…
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Final evaluation 9 - The Hydrosphere
EduBook Organización
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Decide which of the following sentences are false and correct them: Some 97,4% of the planet's water is continental. More than 75% of the planet's fresh water is located in glaciers. Homes,…
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Investigate. Non-renewable sources of energy
EduBook Organización
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Remember what you have studied in this section and answer the questions: Find out what other products are obtained from coal and oil and say what they are used for. Find out how a nuclear power station…
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Complete. Overfishing
EduBook Organización
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Complete the sentences with the missing words: The use of increasingly efficient fishing and the growing number of fishing are the main causes for overfishing. Ever since each country has had…
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Air pollution
EduBook Organización
- 2509 visitas
3.1. What is air pollution? For life to exist, it is essential that the composition of air remains stable. When we pollute the air, we are changing its composition. When we add or remove any component,…
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Find out more
EduBook Organización
- 2359 visitas
The kidneys play an important role in the daily workings of our body. It is important to look after our kidneys in order to maintain a healthy urinary system. The kidneys remove waste products and…
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The digestive system (I)
EduBook Organización
- 2190 visitas
The digestive system is the group of organs that digest food, absorb nutrients and expel undigested waste. It contains the alimentary canal and the digestive glands. The alimentary canal The alimentary…
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